Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Class D Switching Power Amplifiers and Power D/A conversion

ucd 25 watts to 1200 watts using 2 mosfets
ucd 25 watts to 1200 watts using 2 mosfets
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 5th December 2017, 12:26 PM   #4651
kees52 is offline kees52  Netherlands
diyAudio Member
 
Join Date: May 2009
Location: Sprang-capelle Holland.
I have try some things with a discrete comparator and a IR2011 and lead lag and poles to get low distortions, however the IR2011 model for LTspice give a strange square wave and using dead time give more shoot through then without, strange.

I did put this here because here are some more tryouts and learning is always oke.

regards
Attached Images
File Type: jpg ScreenHunter_531 Dec. 05 13.20.jpg (259.0 KB, 183 views)
  Reply With Quote
Old 8th December 2017, 03:31 AM   #4652
kartino is offline kartino  Indonesia
diyAudio Member
 
kartino's Avatar
 
Join Date: Feb 2005
Location: Gunungkidul Indonesia
Quote:
Originally Posted by stewin View Post
o.k thanks katrino, i will give it a try
This is my sigma delta in BTL

YouTube
  Reply With Quote
Old 8th December 2017, 03:41 AM   #4653
kartino is offline kartino  Indonesia
diyAudio Member
 
kartino's Avatar
 
Join Date: Feb 2005
Location: Gunungkidul Indonesia
Anyway why don't you go for fullbridge.
Fullbridge is better, very very stable and robust. I have both UcD and sigma delta. My sigma delta is fullbridge, supplied up to 115Vdc very stable (and can be more).

BTL problem is stability. Higher supply volt will be more issue.
  Reply With Quote
Old 8th December 2017, 02:18 PM   #4654
toreto009 is offline toreto009  Russian Federation
diyAudio Member
 
Join Date: Oct 2015
Location: Bryansk
Quote:
Originally Posted by kartino View Post
Anyway why don't you go for fullbridge.
Fullbridge is better, very very stable and robust. I have both UcD and sigma delta. My sigma delta is fullbridge, supplied up to 115Vdc very stable (and can be more).

BTL problem is stability. Higher supply volt will be more issue.
do you have a circuit and pcb your amplifier fullbridge?I want to build it.
  Reply With Quote
Old 9th December 2017, 05:41 AM   #4655
Diymed is offline Diymed
diyAudio Member
 
Join Date: Aug 2017
Quote:
Originally Posted by kartino View Post
This is my sigma delta in BTL

YouTube
this is my class d 1u work in btl . parts is inside lol
  Reply With Quote
Old 10th December 2017, 07:00 AM   #4656
kartino is offline kartino  Indonesia
diyAudio Member
 
kartino's Avatar
 
Join Date: Feb 2005
Location: Gunungkidul Indonesia
Quote:
Originally Posted by Diymed View Post
this is my class d 1u work in btl . parts is inside lol
What do you mean??
  Reply With Quote
Old 10th December 2017, 07:01 AM   #4657
kartino is offline kartino  Indonesia
diyAudio Member
 
kartino's Avatar
 
Join Date: Feb 2005
Location: Gunungkidul Indonesia
Quote:
Originally Posted by toreto009 View Post
do you have a circuit and pcb your amplifier fullbridge?I want to build it.
Find my thread.
I give only schematic.
  Reply With Quote
Old 10th December 2017, 11:22 AM   #4658
kees52 is offline kees52  Netherlands
diyAudio Member
 
Join Date: May 2009
Location: Sprang-capelle Holland.
Quote:
Originally Posted by kartino View Post
Anyway why don't you go for fullbridge.
Fullbridge is better, very very stable and robust. I have both UcD and sigma delta. My sigma delta is fullbridge, supplied up to 115Vdc very stable (and can be more).

BTL problem is stability. Higher supply volt will be more issue.
I did sim btl version, it give strange outcomes, need a 30 khz higher carrier on one side. better is indeed a full bridge, no need for sync.

Last picture you see the voltage is strange but the current looks oke with very low distortion, not yet dead time implemented tough.

regards
  Reply With Quote

Reply


ucd 25 watts to 1200 watts using 2 mosfetsHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Philips 40/25/15 watts amplifier with Universal preamplifier circuit. renjiish Solid State 96 4th August 2017 10:40 AM
Decibel Watts VS Watts ? fivestring Solid State 11 1st April 2009 02:08 PM
AMP1-B: why only 25 watts @8ohms? theAnonymous1 Class D 10 15th August 2005 07:55 PM
Sound quality of amps at 0.3 watts vs @ typical 5 watts rick57 Solid State 2 26th March 2005 07:25 AM
Need 2 watts Vivek Everything Else 4 17th July 2003 09:29 AM


New To Site? Need Help?

All times are GMT. The time now is 04:56 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki